Transcript Extreme Beaks!

Infectious Disease
A look at how climate change is
affecting infectious diseases.
www.windows2universe.org
A Windows to the Universe presentation to
accompany the Infectious Diseases activity
Changing Planet: Infectious
Diseases
NBC Learn Video – Infectious Diseases
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Class Summary of Infectious
Diseases Chart
Infectious Diseases
I’ve Had
Infectious Diseases
My Parents Have
Had, But I Never
Did
Infectious Diseases
My Grandparents
Had, But I Never
Did
Infectious Diseases
I’ve Heard About
Vector-borne diseases
Number
of people
infected
Present
distribution
Likelihood of
altered
distribution
Disease
Vector
Population at risk
Malaria
Mosquito
2.4 billion
300-500
million
Tropics and
subtropics
High
Schistosomiasis
Water
snail
600 million
200
million
Tropics and
subtropics
Medium
African
sleeping
sickness
Tsetse fly
55 million
300,000
Tropical
Africa
Medium
Dengue
Mosquito
1.8 billion
30
million
Tropics
Medium
Yellow Fever
Mosquito
450 million
>5,000
Tropics
Low
Vectors are animals that spread human diseases
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Malaria
• Malaria affects
millions of people
worldwide every
year.
• Malaria is spread by mosquitoes, and is a problem in
warm, wet climates where the mosquitoes flourish
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Cholera
• Cholera is a disease caused by a
bacterium that spreads through
contaminated drinking water
• When poor living conditions or
disaster force people to drink
contaminated water, cholera can
quickly become epidemic
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Dengue
• Dengue (also known as breakbone
fever) is a viral disease spread by
mosquitoes
• Like malaria, it is spreading because
many environments are getting
warmer and wetter and allowing
mosquito populations to increase
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Dengue
Dengue is projected to spread with global warming
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Schistosomiasis
• Schistosomiasis is a disease
spread by parasitic worms.
• It is spread by snails, and is a
problem in wet tropical climates
where the snails are abundant and
water is often contaminated with
human waste.
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